NDLI: Ultrasonic nondestructive testing and evaluating system for the brazing quality of a guide ring

Content Provider	Springer Nature Link
Author	Gao, Shuang sheng Chi, Da zhao Gang, Tie
Copyright Year	2012
Abstract	The important status of guide ring in large power plants and its manufacturing methods were introduced. The advantages of manufacturing methods including welding and electrolysis were discussed. In order to ensure the brazing quality of the guide ring, ultrasonic nondestructive testing (UNDT) method was used in this study. According to the features of the defects that may show up during brazing, the feasibility and reliability of UNDT were proved in theory. Based on the theory, an ultrasonic C-scan imaging test method was developed using a water immersion focusing probe. According to the features of the inspected images, the defects were segmented using a morphology image processing based method. The defects can be localized and sized by employing the algorithm of area reconstruction. At last, the combination ratio of brazing interface can be calculated and the brazing quality of the guide ring can be evaluated.
Starting Page	527
Ending Page	530
Page Count	4
File Format	PDF
ISSN	10071172
Journal	Journal of Shanghai Jiaotong University (Science)
Volume Number	17
Issue Number	5
e-ISSN	19958188
Language	English
Publisher	Shanghai Jiaotong University Press
Publisher Date	2012-10-02
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	guide ring braze ultrasonic testing image processing Life Sciences Architecture Materials Science Electrical Engineering Computer Science
Content Type	Text
Resource Type	Article
Subject	Multidisciplinary

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